Apparatus for the production of horizontal stripes on the circular knitting frame



Nov. 2 1926. 1,605,727 C. HILSCHER APPARATUS FOR THE PRODUCTION OF HORIZONTAL TRIPES on THE CIRCULAR KNITTING FRAME Filed March 6, 1926 Patented Nov. 2, 1926,

UNITED STATES A 1,605,727 PAT T OF'FIQE-Q CURT HILSCHER, OF CHEMNITiZ, GERMANY.

APPARATUS FOR THE PRODUCTION OF HORIZONTAL STRIPES ON THE CIRCULAR KNITTING FRAME.

Application filed-Mambo, 1926, Serial No. 92,837 and inG'ermany July 2, 19 24.

This invention relates-to an apparatus for working horizontal stripes of any desired width into the cylindrical fabric, the thread guides being automatically adjusted and secured inthe adjusted position.

Thread guide arrangements have become known which serve for the above mentioned purpose. From these the present invention differs however in that the knobs on the pat-- tern chain which serve to bring thread guides into position do not directly cause the alteration of the position of the thread guides, but act upon rockers which, according to their adjusting, leave the ratchet pawls of the thread guides at rest or release the same for a longer or shorter time it they are pulled by a lever operated by a cam disk. All thread guides may further be rendered inoperative through the intermediary of a lever operated from the pattern drum, it being of no importance which of the thread'guides is actually in the working position.

An embodiment of the invention is shown, by way of example, in the accompanying drawing in which- Figs. 1 and 2 show the mechanism in side elevation in two different positions.

Figs; 3, 4: and 5 show the different positions of the levers for the adjusting of the thread guides.

The thread guides 1. are oscillatably mounted the one at the side of the others. Underneath each thread guide 1 a lever 2 is arranged pivotally around a pivot pin 3. These levers 2 are operated by suspended rockers 4. Ratchet pawls 5 are arranged, one above each thread guide 1,-and designed to engage with a corresponding tooth 6 arranged in the upper arm of the thread guide above the pivot pin 3. The rocker lever A adopts alternately, being pushed from a pattern chain 7 through the intermediary of an elbow lever 8, three different positions, on the one hand with regard.

also driven from the driving shaft.

move either along the noses 15 of the corresponding ratchet lever 5 or push against these noses so that in this case the ratchet:

pawls 5 are disengaged from the tooth 5 of the corresponding thread guide 1, the

thread guide-being thus released. The libera ated thread guide is caught by the corresponding lever so that its drop is limited. In order that the thread guides may be ren;

dere'd inoperative independently of the pat? tit] tern chain 7 a lever 1617 is further ar ranged underneath each lever 2, Sara levers 16-17 being operated from a drum (not shown) through th e intermediary of a rod The thread guides and their operating" mechanisms are at rest" and the-needle cylinder of the circular knitting frame rotates, the pattern chain 7 and cam disk 11 being The cam disk 11 executes at every rotation of the needle cylinder one rotation-and-the pattern chain is advanced one link at every rotation of the needle cylinder. One'lowknob 12 and one high knob 13' are fixed on the pattern chain for each'thread guide.v

As long as no knob acts upon the elbow lever 8 the end of this lever is in contact with the pattern chain and the corresponding rocker 4 is in such position that its upper end is not in contact with the nose 15 of the corresponding ratchet pawl 5, as shown in Figs. 2 and 3. The rocker (41 in Figs. 2 and 3) is in such position that none of the lateral projections 19 and 20 can come in contact with the projections 21 and 22 of the forkshaped lever 9. v

If a low knob 12 acts upon the rear end of an elbow lever 8, as shown in Fig. 1, the rocker 4- slightly pulled back so that its upper end 14 acts upon the nose 15 of the corresponding ratchet pawl 5 whereby the corresponding thread guide 1 is released and drops into the working position. At the same time the cam disk 11 makes the rear arm 10 of the forkshaped lever 9 drop and as the projection 19 ot the rocker 4 has come into the range of the projection 21 or the forkshaped lever 9 this rocker is pulled down and the thread guide 1 is lifted by the corresponding lever 2 to be engaged by the corresponding pawl 5, If

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a high knob 13 acts upon a lever 8 the corresponding rocker (t in Figs. 4 and 5) is brought into such an inclined position that its upper end 14: pushes the nose 15 of pawl 5 back so that the corresponding thread guide 1 is released. The upper end 14 of this rocker 4 maintains the pawl during the descent of rocker 4 permanently in the position so that the pawl 5 cannot engage with the thread guide and this thread guide remains in the working position when the rocker swings back. By the action of a high knob 13 of the pattern chain 7 the rocker a is lowered as its projection 20 is in the range of the projection 22 ofthe torkshaped lever 9 as can be seen in Fig. 5,

In this manner the thread guides can be movedand secured in position by means of the mechanism described and shown so that the horizontal rows of loops are worked in.

I claim 1. A change mechanism for the thread guides of circular knitting frames having a rotatable needle cylinder, comprising in combination with the thread guides, a locking pawl for each thread guide, one lever for each thread guide for acting upon said pawl, another lever for each thread guide for lifting said thread guide, a pattern chain, a low knob and a high knob on said pattern chain for indirectly controlling each thread guide, a cam disk, an elbow lever intermittently operated by said cam disk to pull said releasing lever for said thread guide, and a rocker lever hingedly connected at the front and with said releasing lever and acted upon by said pattern chain and by said knobs on said pattern chain to bring said releasing lever into three different positions so that in the fifzlt position it does not come in contact v aid locking pawi. acting in the second posi u in In said locking pawl to release its thread guide for a short time and acting in the third position upon said locking pawl to release its thread guide for a longer time.

2. A change mechanism for the thread guides of circular knitting frames having a rotatable needle cylinder, comprising in combination with the thread guides, a locking pawl for each thread guide, one lever for each thread '"idc for acting upon said pawl, another for each thread guide for lifting said thread guide, a pattern chain, a low knob and a high knob on said pattern chain for indirectly controlling each thread guide, a cam disk, an elbow lever intermittently operated by saidcam disk to pull said releasing lever for said thread guide, and a rocker lever hingedly connected at the front end with said releasing lever and acted upon by said pattern chain and by said knobs on said patern chain to bring said releasing lever into three ditlerent positions so that in the first position it does not come in contact with s id locking pawl, acting in the second position, upon said locking pawl to release its thread guide for a short time and acting in the third position upon said locking pawl to release its thread guide for a longer time, pattern drmn, and angle levers controlled by said pattern drum one ior each thread guide tor bringing the same into the inoperative position.

In testimony whereof I atlix my signature.

CURT 'iiinsonnn. 

